In this AL Monitor article, the growing dissatisfaction between Hamas and Fatah is outlined in detail. A short time after the agreement to work together was made, current accusations of treason by each side have the organizations on shaky ground.
This article takes an interesting look at the current trend pointing towards a single-state solution. This 2010 Dissent article states that the overall drive for a separate Palestinian state is dwindling as the PLO's own strength dwindles as well.
Hamas plays a large role in Palestinian politics. Their clash with Fatah in 2007 struck the Gaza strip and led to an outbreak in fighting and sanctions put onto Hamas.
The Israeli regime has been known to have killed 19 Palestinians in the past six months, according to a report released by the PLO-affiliated Abdullah Al Hourani Centre for Studies and Documentation. The centre says that Israeli soldiers justified these murders under the pretext of self-defence.